The error message says the host name 'igteblrmanage01' cannot be found. Can you ping that host (from the system displaying the error)? Is the name spelled correctly? Is your hosts file set up correctly? You could also try using IP addresses instead of host names.

If none of that helps, post the contents of your hosts file on all systems involved, and state what OSes you are using, which version of JBoss AS, and JVM.